[ceph-users] Rolling upgrade model to new OS

Hello, I need to upgrade the OS that our Ceph cluster is running on to support new versions of Ceph. Has anyone devised a model for how you handle this? Do you just: Install some new nodes with the new OS Install the old version of Ceph on the new nodes Add those nodes/osds to the cluster Remove the old nodes Upgrade Ceph on the new nodes Are there any specific OS that Ceph has said that will have longer future version support? Would like to only touch the OS every 3-4 years if possible. Thanks, -Drew